hello from Italia!

hoping to have posted in the right section... I need your help!

I bought on ebay a faulty iphone with firmware 1.1.4
the problem is "no imei - no wifi - no network - gets hot - battery doesn't last long - no sound"
I read that is a baseband problem, because it controls all these components
I looked in many forums, following guides to solve this problem... (I have winXP)
from the beginning: I pur the phone in dfu, recovered in 1.1.4
I've got error 1011
with ziphone GUI I do NORMAL MODE to start it up
with iplus.bat (2.0b) I install all payloads (terminal, installer, ssh etc)
during the procedure I see "invalid calibrationd data in device tree"
after that it boot but still with no signal - sound etc
the window "repair needed" pops up
but the terminal works!
I copy the data (secpack bbupdater ICE....fls and ICE....eep and ienew and ieraser) with total commander in usr/bin
so
password alpine
launchctl unload -w /System/Library/LaunchDaemons/com.apple.CommCenter.plist
cd /usr/bin
ienew
error "permission denied"
chmod +x ienew
ienew
error "can't write"
killall -9 CommCenter
ienew
bus error ienew
chmod 777 ienew

I list the errors I receive in all 3 situations (ienew - ieraser - bbupdater)

ienew
error "waiting for data" e its stuck


ieraser
error "permission denied"
chmod +x ieraser
ieraser
baseband reset
waiting for data
got header: 77 0b cc
02 00 85 00 02 00 FF FF 85 02 03 00
secpack
WHITE SQUARE
WHITE SQUARE
erase
endless WHITE SQUARE

bbupdater -f ICE....fls -e ICE....eep
endless loop with error "failed to download .FLS"

if I try bbupdater -v the answer is resetting baseband - baseband unresponsive to pinging.

I tried secpacks - .eep - .fls from various websites and versions (1.1.1, 1.1.2, 1.1.3, 1.1.4)

what can I do now?
I would like to use testpoint a17 as a last solution!

thanks in advance to everyone!
Rey